Slip joint



Nov. 6, 1928.

E.' l. BRADDOCK SLIP JOINT Filed March 28. 1924 2 Sheets-Sheet \NVENTOR mamf/ZM ATTORNEY Nov. 6, 1928.

E. l. BRADDOCK SLIP JOINT Filed 'March 28, 1924 2 sheds-sheet 2 iNVENTOR ATTORNEY Patented Nov. 6, 1928.

` UNITED STATES PATENT OFFICE'.

EDWARD I. BRADDOCK, OF CLEVELAND, OHIO; ROBERT H. MONTGOMERY EXECU'IOR 0F SAID BRADDOCK, DECEASED.

SLIP JOINT.

Appncanoii med March 2s, 1924. serial No. 702,626.

This invention relates to a slip joint having a male and female member movable longitudinally with respect to each other.

The invention has for its object to proi vide a slip joint of the character described, which is especially `adapted among other uses to be employed in automobile and like vehicles for coupling the driving shaft with the `driven shaft insuch manner as will permit one shaft tovbe easily `moved longitudinally with respect to the other when under load. i

To this end, the male` member is provided with a plurality of. substantially fiat wearing surfaces extended longitudinally thereof, and the female member is provided with a plurality of substantially flat wearing surfaces extended longitudinally thereof on its interior and opposing the Wearing surfaces of said male member', and said wearing sur faces cooperate with antifriction devices interposed betweenopposed` wearing surfaces. The wearing surfaces may be integral with or separate from the male and female niembers. l

These and other features of this invention will be pointed out in the claims at the end of this specification.

Fig. 1 is a partial elevation and longitudr nal section of a slip joint embodying this invention; Fig. 2, an end elevation of the slip joint shown in Fig. 1 looking toward the left; Fig. 3, Aa partial elevation and longitudinal section of a modification to be referred to; Fig. l, an vend elevation of the joint shown in Fig. 3; Figs'. 5 and 6, details of one of the cagesshown in Fig. 3;' and Fig; 7, a detail of the cage shown in Fig. 1.

Referring to ,the drawing and especially toFigs.v 31and .4", a represents the male niember and ZJ the female member of `one form of slip joint embodying the invention.` The male member misrepresentedA as a section or extension of a metal shaft c which may be considered the driven shaft, and the female member ZJ is represented as a metal sleeve having provision for attachment to a driving shaft, not shown. The male niemberv a is shown as substantially square in cross-section andeach side thereof is provided with a reduced portion 10 between end portions 12 which latter are substantially flat or straight and extend longitudinally of the male member to provide each 13 on the interior surface of the sleeve or I' female member l), and said opposed.` bear-v ing surfaces are spaced apart a sufficient distance to receive aiitifriction devices, such as rolls or balls 14 which are carried by a cage or device 15l to lreep the rolls or balls in proper relation to the bearing surfaces and in contact therewith. rlhe cage or device` 15 may be of any suitable construction capable of holding the rolls or balls and preferably composed of upper and lower sheet metal meinbersl, 17, detacliably secured together and provided with suitable openings through which the rolls or balls project to engage the bearing surfaces. Tliecage 15 is movable longitudinally of the male and female members and is guided and limited in such movement by a screw or pin 2O extended through a longitudinal slot 21 in the cage and inserted into a suitable socket in one of the members, which is shown in Figs. 3 and 4 as the male member. The antifriction devices or rolls ,la act also to couple the male and femaleniembers together so kthat rotation of one member will effect rotation of tlieother member, and in the present instance this is effected by providing the inner circumference of the female member with longitudinally extended ,recesses 22 whose walls are `substantially at right angles to each other.

The male member a may be provided with a bore 23 extended partially the length thereof. The female member l) may be proided at one end with a flange 24 by which it may be connected with the driving member therefor, such as the motor shaft of an automobile.

The female member may be provided at its opposite end with screw threads 26 which are engaged by a threaded cap 27 by which discs 28 of felt or other suitable packing material may be held in place to close kthe end of the sleeveliquid tight.

The female member may be made of chrome steel or like metal which in an unhardened condition is suilciently hard to aiord a durable bearing or wearing surface.k In some instances it may be desirable toy make the female member of relatively soft metal, such as aluminum, bronze and thelike, on account of lightness and cheapness, in

` which ease the bearing surfaces fortlie fe-y male member are madeofseparate plates or pieces 29 of a harder material such as unhardened chrome steel or hardened steel after the ymanner represented in Figs. Ll`

and 2. j

The hard-wearing or bearing members 29 may be :inserted into suitable channels in the female member and the cages l5 carrying the 4balls or rolls let are connected with said wearing plates or members bythe pins extended through the slotsin said cages. The antifriction devices maybe lubricated with oilfthr'ough suitable holes 35 in the fe-v malefmember. n j

f From the abovedescription, it will be'seen thatby means of the antifriction devices interposed between substantiallyiiat longitu dinally extended wearing or bearing surfaces on the male and female 'members of the joint, the said male and female'memberl when incorporated in a motor vehicle may be moved lengthwise with relation toV eachk other while under load with a minimum amount of power, while atthe same time the wearing surfaces may be hardened or made of metal sufficiently hard toy stand the wear pl'aced'upon them. i'

'What I claim is z`-qj o l. lA slip joint comprising a shaft having va male member provided with a plurality rof substantially flat longitudinally extended wearing surfaces, a femaley member co-operatingr withr said male member and having substantially flat wearing surfaces on its interior extended longitudinally thereof and (1o-operating with the flatwearing surfaces of the male member, and antifriction kunits insertible-into and removable from said'female member and interposedfbetwee'n and engaging said opposed wearing surfaces and comprising a plurality of antifriction devices and substantially flatfcages by which said antifriction devices are carried and retained in operative relation', said cages comrisinO members connected toUether and be tween which said antifriction devices are located and having openings through which said antifriction devices project.

2. A slip jointocomprising a shaft havingl a male member provided with a plurality n of substantially flat longitudinally extended waarin@ sui'faces,a female member co-operating with said male member and compris-- ing aV cylindrical sleeve'and a plurality of wearing members insertible into and removable fi'oinsaid sleevefand having substan` tially flatwearing surfaces opposed to the wearingsurfaces of said male member, and antifriction units insertible into and removable from said female member and interposed between and engaging said `opposed wearing surfaces, and comprising` a plurality of antifriction devices and substantially flat cages by which said antifriction devices are carried and retained in operative rela-y tion, 'said cages comprising members conposed wearing surfaces, substantially flat cages in which said antifriction devices are assembled to project therethrough and retained to form a removable antifriction unit, said cages being rinterposed between said co` koo male member and interposed ybetween op- I operating wearing fsurfaces 'and' provided with longitudinal slots, andineans extended through said slots and secured 'to one of the members of the slip joint to vlimitthe bodilyl movement of the antifrictionunits witlirelation to the slip joint members.

In'testimony whereof, I have signed my( name to this specification;`

EDWARD i! BRA/macon. 

